Android Color Convert rgbToGray(int pixels)

Description

rgb To Gray

License

Apache License

Declaration

private static int rgbToGray(int pixels) 

Method Source Code

//package com.java2s;
/*/*from   ww w .  j a va  2  s .  co m*/
 * Copyright (C) 2013 www.418log.org
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {

    private static int rgbToGray(int pixels) {
        // int _alpha = (pixels >> 24) & 0xFF;
        int _red = (pixels >> 16) & 0xFF;
        int _green = (pixels >> 8) & 0xFF;
        int _blue = (pixels) & 0xFF;
        return (int) (0.3 * _red + 0.59 * _green + 0.11 * _blue);
    }
}

Related

1. getArgb(int color)
2. getColorFromArgb(int[] argb)
3. decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width, int height)
4. decodeYUV420SP(int[] rgb, byte[] yuv420sp, int width, int height)
5. decodeYUV420SPGrayscale(int[] rgb, byte[] yuv420sp, int width, int height)